linux-kernel - Re: [PATCH 1/3] media: rockchip: Introduce the rkvdec2 driver

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Date: Tue, 18 Jun 2024 20:13:29 +0800
From: Jianfeng Liu <liujianfeng1994@...il.com>
To: detlev.casanova@...labora.com
Cc: alchark@...il.com,
	andy.yan@...k-chips.com,
	conor+dt@...nel.org,
	cristian.ciocaltea@...labora.com,
	devicetree@...r.kernel.org,
	didi.debian@...ow.org,
	dsimic@...jaro.org,
	gregkh@...uxfoundation.org,
	heiko@...ech.de,
	krzk+dt@...nel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-staging@...ts.linux.dev,
	liujianfeng1994@...il.com,
	mchehab@...nel.org,
	nicolas@...fresne.ca,
	robh@...nel.org,
	sebastian.reichel@...labora.com
Subject: Re: [PATCH 1/3] media: rockchip: Introduce the rkvdec2 driver

Hi Detlev,

On Fri, 14 Jun 2024 21:56:27 -0400, Detlev Casanova wrote:
>+		.frmsize = {
>+			.min_width = 16,
>+			.max_width =  65520,
>+			.step_width = 16,
>+			.min_height = 16,
>+			.max_height =  65520,
>+			.step_height = 16,
>+		},

I think the min/max width/height are incorrect. From rockchip's TRM V1.0
Part1 page 374, supported image size is 64x64 to 65472x65472. And my
chromium can't use rkvdec2 because min width/height are set to 16, which
will cause error at here in rkvdec2_h264_validate_sps:
>+	if (width > ctx->coded_fmt.fmt.pix_mp.width ||
>+	    height > ctx->coded_fmt.fmt.pix_mp.height)
>+		return -EINVAL;

width is 16, height is 32 while ctx->coded_fmt.fmt.pix_mp.width and
ctx->coded_fmt.fmt.pix_mp.height are both 16.

After changing them to 64 my chromium can use rkvdec2 to decode h264
videos now.

Anyway many thanks to your amazing work!

Best regards,
Jianfeng